CN101854140A - Overload protection device - Google Patents
Overload protection device Download PDFInfo
- Publication number
- CN101854140A CN101854140A CN200910301322A CN200910301322A CN101854140A CN 101854140 A CN101854140 A CN 101854140A CN 200910301322 A CN200910301322 A CN 200910301322A CN 200910301322 A CN200910301322 A CN 200910301322A CN 101854140 A CN101854140 A CN 101854140A
- Authority
- CN
- China
- Prior art keywords
- magnetic part
- magnetic
- overload protection
- opening
- protection arrangement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000000694 effects Effects 0.000 claims description 4
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D7/00—Slip couplings, e.g. slipping on overload, for absorbing shock
- F16D7/04—Slip couplings, e.g. slipping on overload, for absorbing shock of the ratchet type
- F16D7/042—Slip couplings, e.g. slipping on overload, for absorbing shock of the ratchet type with at least one part moving axially between engagement and disengagement
- F16D7/046—Slip couplings, e.g. slipping on overload, for absorbing shock of the ratchet type with at least one part moving axially between engagement and disengagement with a plurality of axially moving parts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D27/00—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor
- F16D27/01—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with permanent magnets
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention relates to an overload protection device which comprises a wheel axle and a loading piece connected with one end of the wheel axle. The wheel axle is driven by power equipment, the loading piece is provided with two openings centrosymmetric about a shaft hole, either opening is internally provided with a magnetic element which comprises a first magnetic piece and a second magnetic piece, the first magnetic piece is rotatably arranged in the opening, the second magnetic piece is fixed in the opening, the same magnetic poles of the first magnetic piece and the second magnetic piece are oppositely arranged, the end parts of the two first magnetic pieces respectively rotate and extend out of both sides of the loading piece under the repulsion force action of the second magnetic piece, and the wheel axle comprises a driving part which abuts against the end of the first magnetic piece, which extends out of the loading piece. Torque generated by the repulsion force of the second magnetic piece acting on the first magnetic piece is not more than torque generated by the abutting force of the driving part of power equipment acting on the first magnetic piece when the power equipment reaches a rated load.
Description
Technical field
The present invention relates to overload protection arrangement.
Background technology
All can be provided with overload protection arrangement in the power-equipments such as existing motor, coil circuit in this power-equipment or other elements are unlikely to burn out damage to protect when the overload.Traditional overload protection arrangement structure is comparatively complicated, generally also will be provided with control circuit, to cut off the electricity supply when transshipping.So, make not only complex structure of overload protection arrangement, and with high costs.
Summary of the invention
In view of this, be necessary to provide a kind of simple in structure, overload protection arrangement cheaply.
A kind of overload protection arrangement, it is used for power-equipment, and it comprises a wheel shaft and a load elements that is connected with described wheel shaft one end.Described wheel shaft is driven by power-equipment, and described load elements can drive load movement under the drive of wheel shaft.Described load elements center offers an axis hole and two openings that are centrosymmetric about described axis hole, and the end of described wheel shaft is rotating to be arranged in the described axis hole.Be provided with a magnetic element in described each opening, described magnetic element comprises that rotating first magnetic part and that is arranged in the described opening is fixed in second magnetic part in the described opening, and the same pole of described first magnetic part and described second magnetic part is oppositely arranged.The end of described two first magnetic parts rotates the both sides of stretching out described load elements respectively under the repulsive force effect of described second magnetic part.Described wheel shaft comprises a drive division, and the end that described drive division and described first magnetic part stretch out described load elements offsets.The moment of torsion that repulsive force produced that acts on second magnetic part on described first magnetic part acts on the moment of torsion that resist force produced of the described drive division on described first magnetic part when being not more than the nominal load that power-equipment reaches.
With respect to prior art, described overload protection arrangement utilizes described magnetic element to realize overload protection, and it is simple in structure, and in addition, described overload protection arrangement does not need control circuit, thereby cost is lower.
Description of drawings
Fig. 1 is the decomposing schematic representation of overload protection arrangement of the present invention;
Fig. 2 is the assembly drawing of the overload protection arrangement of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing the present invention being done one specifically introduces.
See also Fig. 1, be depicted as the STRUCTURE DECOMPOSITION figure of overload protection arrangement 100 of the present invention, described overload protection arrangement 100 comprises a wheel shaft 10 and a load elements 20.Described wheel shaft 10 is driven by power-equipment (figure do not show), and the other end connects described load elements 20, and wheel shaft 10 can drive described load elements 20 and rotate under the driving of described power-equipment, carries load (scheming not show) on the described load elements 20.In the present embodiment, described power-equipment is a motor.
Described load elements 20 is used to drive described load movement, and it can be a belt pulley or a gear, perhaps other forms of load elements.Described load elements 20 comprises that a wheel disc 21 and is opened in the axis hole 22 of described wheel disc 21 centers, and described axis hole 22 articulates with described wheel shaft 10 1 ends.
Described wheel disc 21 comprises one first side 211 and one and described first side 211 second side surface opposite 212.Offer two openings 23 that are centrosymmetric about described axis hole 22 on the described wheel disc 21.Described opening 23 is fan-shaped and is opened on the described wheel disc 21, and a sidewall of described opening 23 is provided with a fixed axis 24, offers a groove 231 on another relative sidewall.Be provided with a magnetic element 25 in described each opening 23, described magnetic element 25 comprises one first magnetic part 251 and one second magnetic part 252.Described first magnetic part 251 is articulated in by described fixed axis 24 in the opening 23 of described wheel disc 21, and described second magnetic part 252 is fixedly arranged in the groove 231 of described opening 23.Described first magnetic part 251 is oppositely arranged with the same pole of described second magnetic part 252, and the repulsive force between the two rotates according to certain angle described first magnetic part 251 from described opening 23.The end of described first magnetic part 251 is rotated out first side 211 and second side 212 of described wheel disc 21 respectively.
Described first magnetic part 251 is a triangular prism shape, be formed with a sleeve 2511 on the rib of described first magnetic part 251, described first magnetic part 251 comprises that first end 2512 and that is positioned at described sleeve 2,511 one sides is positioned at second end 2513 of described sleeve 2511 opposite sides.Described sleeve 2511 is sheathed on the described fixed axis 24, and first end 2512 of one of them first magnetic part 251 stretches out described wheel disc 21 first sides 211, and first end 2512 of another first magnetic part 251 stretches out second side 212 of described wheel disc 21.
Described wheel shaft 10 comprises that an axis body 11 and is formed at the drive division 12 on the described axis body 11.Described drive division 12 comprises and a plurality ofly is arranged at drive rod 121 on the described axis body 11 corresponding to described opening 23 that described drive rod 121 is the radial corresponding opening 23 that extends on described axis body 11.Described drive rod 121 keeps at a certain distance away on axis body 11 along the axis of described axis body 11.Described axis body 11 is by in the rotating axis hole 22 that is arranged at described wheel disc 21 of described drive rod 121 part at interval.Described drive rod 121 is arranged at first side, 211 1 sides of described wheel disc 21 and second side, 212 1 sides and end respectively and is held in respectively on first end 2512 of described first magnetic part 251.
Described two drive rods 121 can be inserted on the described axis body 11.Certainly it also can be located on the described axis body 11 by a ring set fixed cover respectively.During assembling, the end with described axis body 11 is arranged in the described axis hole 22 earlier, more described drive rod 121 is fixed on the described axis body 11 in described wheel disc 21 both sides.
When the load of described load elements 20 during less than certain value, the resist force of described drive rod 121 to the moment of torsion of described first magnetic part 251 less than the repulsive force of described second magnetic part 252 moment of torsion to described first magnetic part 251, described first magnetic part 251 remains static with respect to the opening 23 of described wheel disc 21, and this moment, described drive rod 121 can drive described load elements 20 rotations.When the load of described load elements 20 surpasses certain value, greater than the repulsive force of described second magnetic part 252 during to the moment of torsion of described first magnetic part 251, described first magnetic part 251 can rotate by the opening 23 with respect to described wheel disc 21 under the effect of described drive rod 121 resist force of described drive rod 121 to the moment of torsion of described first magnetic part 251.The moment of torsion that repulsive force produced that acts on second magnetic part 252 on described first magnetic part 251 acts on the moment of torsion that resist force produced of the described drive rod 121 on described first magnetic part 251 when being not more than the nominal load that motor reaches.
Certainly, in the practical application, repulsive force between described first magnetic part 251 and second magnetic part 252 is preferably designed as the resist force of 121 pairs of described first magnetic parts 251 of described drive rod when being slightly less than the motor nominal load, with the load of proof load part 20 hour, motor can drive described load elements 20 load movements below nominal load.
See also Fig. 2; be depicted as the structure chart after overload protection arrangement 100 assemblings of the present invention are finished; the principle of described overload protection arrangement 100 is as follows: when the load of described load elements 20 does not surpass the nominal load of described motor; the resist force of described drive rod 121 to the moment of torsion of described first magnetic part 251 less than the repulsive force of described second magnetic part 252 moment of torsion to described first magnetic part 251; make described load elements 20 under the driving of described drive rod 121, to rotate, to drive load.When the load of described load elements 20 surpasses the nominal load of described motor, the resist force of 121 pairs of described first magnetic parts 251 of described drive rod to the moment of torsion of described first magnetic part 251 greater than the repulsive force of described second magnetic part 252 moment of torsion to described first magnetic part 251, described drive rod 121 promote described first magnetic part 251 in described opening 23 respectively the opposite side to described wheel disc 21 rotate, described first magnetic part 251 is understood supporting between releasing and the described drive rod 121 in rotating process, at this moment, described motor is in idling conditions, simultaneously, second end, 2513 meetings of described first magnetic part 251 extend out to the opposite side of described wheel disc 21 from described opening 23 under the effect of the repulsive force of second magnetic part 252, after described drive rod 121 turns over 180 degree, described drive rod 121 supports with second end 2513 of described first magnetic part 251 again, at this moment, if the load of load elements 20 still surpasses the nominal load of described motor, then described drive rod 121 promotes described first magnetic part 251 again and rotates, make described motor continue idle running, if the load of load elements 20 does not surpass the nominal load of described motor, then described drive rod 121 drives described load and rotates.So continue, in case overload, described motor can be in idling conditions, burns out damage to prevent motor interior loop circuit, and after the load reduction, described motor can drive load again and rotate.
Described overload protection arrangement utilizes described magnetic element to realize overload protection, and it is simple in structure, and in addition, described overload protection arrangement does not need control circuit, thereby cost is lower.
In addition, those skilled in the art also can do other variation in spirit of the present invention, and certainly, the variation that these are done according to spirit of the present invention all should be included within the present invention's scope required for protection.
Claims (9)
1. overload protection arrangement; it is used for power-equipment; it is characterized in that comprising a wheel shaft and a load elements that is connected with described wheel shaft one end; described wheel shaft is driven by power-equipment; described load elements can drive load movement under the drive of wheel shaft; described load elements center offers an axis hole and two openings that are centrosymmetric about described axis hole; the end of described wheel shaft is rotating to be arranged in the described axis hole; be provided with a magnetic element in described each opening; described magnetic element comprises that rotating first magnetic part and that is arranged in the described opening is fixed in second magnetic part in the described opening; the same pole of described first magnetic part and described second magnetic part is oppositely arranged; the end of described two first magnetic parts rotates the both sides of stretching out described load elements respectively under the repulsive force effect of described second magnetic part; described wheel shaft comprises a drive division; the end that described drive division and described first magnetic part stretch out described load elements offsets, and the moment of torsion that repulsive force produced that acts on second magnetic part on described first magnetic part acts on the moment of torsion that resist force produced of the described drive division on described first magnetic part when being not more than the nominal load that power-equipment reaches.
2. overload protection arrangement as claimed in claim 1 is characterized in that: described load elements comprises a wheel disc, and described axis hole is opened in described wheel disc center, and described opening is opened on the described wheel disc about described axis hole symmetry.
3. overload protection arrangement as claimed in claim 2 is characterized in that: described wheel disc comprises one first side and one and the described first side second side surface opposite.
4. overload protection arrangement as claimed in claim 3; it is characterized in that: described opening is fan-shaped and is opened on the described wheel disc; a sidewall of described opening is provided with a fixed axis; offer a groove on another relative sidewall; described first magnetic part is articulated in the described opening by described fixed axis, and described second magnetic part is fixedly arranged in the described groove.
5. overload protection arrangement as claimed in claim 4; it is characterized in that: described first magnetic part is a triangular prism shape; be formed with a sleeve on the rib of described first magnetic part; described first magnetic part comprises that first end and that is positioned at described sleeve one side is positioned at second end of described sleeve opposite side; described jacket casing is located on the described fixed axis; first end of one of them first magnetic part stretches out described first side, and first end of another first magnetic part stretches out described second side.
6. as each described overload protection arrangement of claim 1 to 5, it is characterized in that: described load elements is belt pulley or gear.
7. overload protection arrangement as claimed in claim 5 is characterized in that: described wheel shaft comprises an axis body, and described drive division is formed at an end of described axis body, and the end that described axis body is formed with drive division is articulated in the described axis hole.
8. overload protection arrangement as claimed in claim 7; it is characterized in that: described drive division comprises and a plurality ofly is arranged at drive rod on the described axis body corresponding to described opening; described drive rod keeps at a certain distance away on axis body along the axis of described axis body; described axis body is by in the rotating axis hole that is arranged at described wheel disc of described drive rod part at interval, and described drive rod is arranged at first side, one side of described wheel disc and second side, one side and end respectively and is held in respectively on first end of described first magnetic part.
9. overload protection arrangement as claimed in claim 8 is characterized in that: described drive rod is radial and fixedly is inserted on the described axis body.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103013229A CN101854140B (en) | 2009-04-02 | 2009-04-02 | Overload protection device |
| US12/565,728 US8220610B2 (en) | 2009-04-02 | 2009-09-23 | Overload protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103013229A CN101854140B (en) | 2009-04-02 | 2009-04-02 | Overload protection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101854140A true CN101854140A (en) | 2010-10-06 |
| CN101854140B CN101854140B (en) | 2011-12-21 |
Family
ID=42805443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009103013229A Expired - Fee Related CN101854140B (en) | 2009-04-02 | 2009-04-02 | Overload protection device |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US8220610B2 (en) |
| CN (1) | CN101854140B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107521078A (en) * | 2017-08-23 | 2017-12-29 | 江苏新美星包装机械股份有限公司 | A kind of stretching device with protection mechanism |
| CN111749997A (en) * | 2019-03-27 | 2020-10-09 | 日本电产株式会社 | Torque limiter, gear motor, drive mechanism, and robot |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936375A (en) * | 2009-06-29 | 2011-01-05 | 鸿富锦精密工业（深圳）有限公司 | Motor overload protection device |
| US9604602B2 (en) | 2013-02-07 | 2017-03-28 | Trico Products Corporation | Wiper motor drive system having breakaway clutch |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3194371A (en) * | 1963-04-29 | 1965-07-13 | Control Data Corp | Magnetic torsional overload clutch |
| US4271944A (en) * | 1979-02-12 | 1981-06-09 | Hanson Douglas R | Single revolution torque limiting clutch |
| US4825992A (en) * | 1987-12-21 | 1989-05-02 | Alfred Skrobisch | Magnetic torque limiting clutch having overload disconnection means |
-
2009
- 2009-04-02 CN CN2009103013229A patent/CN101854140B/en not_active Expired - Fee Related
- 2009-09-23 US US12/565,728 patent/US8220610B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107521078A (en) * | 2017-08-23 | 2017-12-29 | 江苏新美星包装机械股份有限公司 | A kind of stretching device with protection mechanism |
| CN107521078B (en) * | 2017-08-23 | 2023-09-22 | 江苏新美星包装机械股份有限公司 | Stretching device with protection mechanism |
| CN111749997A (en) * | 2019-03-27 | 2020-10-09 | 日本电产株式会社 | Torque limiter, gear motor, drive mechanism, and robot |
Also Published As
| Publication number | Publication date |
|---|---|
| US20100252388A1 (en) | 2010-10-07 |
| CN101854140B (en) | 2011-12-21 |
| US8220610B2 (en) | 2012-07-17 |
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| C14 | Grant of patent or utility model | ||
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Free format text: FORMER OWNER: HONGFUJIN PRECISE INDUSTRY CO., LTD. Effective date: 20141121 Owner name: BEIJING ZHONGCAI WYSE EDUCATION TECHNOLOGY CO., LT Free format text: FORMER OWNER: HONGFUJIN PRECISE INDUSTRY (SHENZHEN) CO., LTD. Effective date: 20141121 Owner name: JIANGSU HUAYU PRINTING AND COATING EQUIPMENT GROUP Free format text: FORMER OWNER: BEIJING ZHONGCAI WYSE EDUCATION TECHNOLOGY CO., LTD. Effective date: 20141121 |
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Free format text: CORRECT: ADDRESS; FROM: 518109 SHENZHEN, GUANGDONG PROVINCE TO: 100083 HAIDIAN, BEIJING Free format text: CORRECT: ADDRESS; FROM: 100083 HAIDIAN, BEIJING TO: 226324 NANTONG, JIANGSU PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20141121 Address after: 226324, Jiangsu, Nantong province Tongzhou District two a town, Yuan Village Patentee after: JIANGSU HUAYU PRINTING & COATING EQUIPMENT Co.,Ltd. Address before: 100083 Beijing Haidian District Zhongguancun Road No. 18 smartfortune International Building B706 Patentee before: Beijing Zhongcai Wyse Education Technology Co.,Ltd. Effective date of registration: 20141121 Address after: 100083 Beijing Haidian District Zhongguancun Road No. 18 smartfortune International Building B706 Patentee after: Beijing Zhongcai Wyse Education Technology Co.,Ltd. Address before: 518109 Guangdong city of Shenzhen province Baoan District Longhua Town Industrial Zone tabulaeformis tenth East Ring Road No. 2 two Patentee before: HONG FU JIN PRECISION INDUSTRY (SHENZHEN) Co.,Ltd. Patentee before: HON HAI PRECISION INDUSTRY Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111221 Termination date: 20180402 |
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| CF01 | Termination of patent right due to non-payment of annual fee |